Very true. Our record of "vital last games" since 70-71 is as follows:
1971: Needed to beat Watford to get promotion. Did so 3-0
1981: Needed to draw with Walsall to stay up. Lost 0-1 and went down.
1984: Needed to beat Newport to have a chance of promotion. Did so and ultimately went up
1988: Needed to beat Bristol City by 2 goals to get through to the play off final and have a chance of staying up. Drew and were relegated.
1990: Needed to win at Leicester to go up. We did.
1994: Needed to draw at Chelsea to stay up. We lost and went down.
1997: Needed to beat Palace in the play off final to go up. We lost.
1998: Needed to avoid defeat at Sunderland to get to the play off final and a chance of promotion. We lost.
2003: Needed to beat Wolves in the play off final to go up. We lost.
2007: Needed a draw with Wigan to stay up. We lost and went down.
2009: Needed to beat Burnley in the play off final to go up. We lost.
Arguable cases are 1979 (when a win over Leicester would have given us a slight chance of staying up; we drew and went down, but would have gone down even if we had won), 1989 (when we needed to avoid a heavy defeat at Bristol City to go up - we lost 0-2 and went up) and 1993 (when we effectively needed to avoid a double figures defeat v Chelsea to stay up. We won 4-2).
In the clear cut cases our records is 9 failures and 3 successes in those vital last games :-(